Casey and Dawson's adoption plans for Louie will be made more difficult with the boy's birth father surfacing. Antonio's ex-wife enters the picture just as his relationship with Brett is just starting in "Chicago Fire" Season 5.

Oliver got the shock of his life when he came face to face with an alive Laurel in the fall finale of "Arrow" Season 5. How this happened will hopefully be explained when the series returns on January 25.